The effect of task asymmetry, age and gender on dynamic trunk motion characteristics during repetitive trunk flexion and extension in a large normal population

1994 ◽  
Vol 2 (3) ◽  
pp. 137-146 ◽  
Author(s):  
W.S. Marras ◽  
M. Parnianpour ◽  
J.-Y.Y. Kim ◽  
S.A. Ferguson ◽  
R.R. Crowell ◽  
...  
Keyword(s):  
Normal Population ◽  
Trunk Flexion ◽  
Age And Gender ◽  
Trunk Motion ◽  
And Gender ◽  
Motion Characteristics ◽  
Flexion And Extension

Poster 362 Age and Gender Related Neuromuscular Changes in Trunk Flexion-Extension

PM&R ◽  
2015 ◽  
Vol 7 ◽  
pp. S209-S210
Author(s):  
Thomas Kienbacher ◽  
Patrick Mair ◽  
Gerold Ebenbichler
Keyword(s):  
Trunk Flexion ◽  
Age And Gender ◽  
Flexion Extension ◽  
And Gender

scholarly journals Age and gender related neuromuscular pattern during trunk flexion-extension in chronic low back pain patients

2016 ◽  
Vol 13 (1) ◽  
Author(s):  
Thomas Kienbacher ◽  
Elisabeth Fehrmann ◽  
Richard Habenicht ◽  
Daniela Koller ◽  
Christian Oeffel ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Low Back ◽  
Trunk Flexion ◽  
Age And Gender ◽  
Flexion Extension ◽  
And Gender ◽  
Pain Patients

Trunk Motion of Male Professional Golfers Using Two Different Golf Clubs

2002 ◽  
Vol 18 (4) ◽  
pp. 366-373 ◽  
Author(s):  
David M. Lindsay ◽  
John F. Horton ◽  
Robert D. Paley
Keyword(s):  
Golf Swing ◽  
Trunk Flexion ◽  
Shaft Length ◽  
Spinal Motion ◽  
Trunk Motion ◽  
Golf Clubs ◽  
Motion Characteristics ◽  
Professional Golfers ◽  
Back Problems ◽  
Side Bending

Low back problems account for the largest proportion of injuries among amateur and professional golfers. However, there is little data on how the trunk or spine moves during a golf swing. Also, it may be that different golf clubs produce different trunk motion characteristics. The purpose of this study was to compare trunk range of motion (ROM) and velocity in three movement planes during the execution of a full golf swing using a driver and a 7-iron. Forty-four members of the Alberta Professional Golf Association volunteered to participate in this study. Trunk ROM and velocities in the sagittal, frontal, and transverse planes were measured using a triaxial electrogoniometer. Results showed that significantly more trunk flexion was required when setting up to hit the ball with the 7-iron compared to the driver, p < 0.05. During the swing, significantly greater maximum flexion and left-side-bend ROM occurred when using the 7-iron, p < 0.05. Maximum right-side-bending velocity during the golf swing was also significantly greater with a 7-iron. These findings suggest that differences in shaft length and ball positioning associated with the different clubs affects swing mechanics and trunk/spinal motion. In particular, the shorter club (7-iron) tended to place more emphasis on lateral trunk motion than did the driver. The results from this study may help clinicians better understand how the golf swing creates stress on the back as well as how club fitting may affect trunk motion characteristics.

scholarly journals Age- and gender-related tear function changes in normal population

Eye ◽  
2009 ◽  
Vol 24 (1) ◽  
pp. 79-83 ◽  
Author(s):  
M Ozdemir ◽  
H Temizdemir
Keyword(s):  
Normal Population ◽  
Age And Gender ◽  
And Gender

scholarly journals Age and gender related neuromuscular changes in trunk flexion-extension

2015 ◽  
Vol 12 (1) ◽  
pp. 3 ◽  
Author(s):  
Thomas Kienbacher ◽  
Birgit Paul ◽  
Richard Habenicht ◽  
Christian Starek ◽  
Markus Wolf ◽  
...  
Keyword(s):  
Trunk Flexion ◽  
Age And Gender ◽  
Flexion Extension ◽  
And Gender

Neuromuscular Control and Active Trunk Stiffness during Isometric Flexion and Extension

2005 ◽  
Vol 49 (14) ◽  
pp. 1334-1338
Author(s):  
Kevin Granata ◽  
Patrick Lee
Keyword(s):  
Neuromuscular Control ◽  
Random Force ◽  
Muscle Stiffness ◽  
Spinal Stability ◽  
Trunk Flexion ◽  
Trunk Motion ◽  
Materials Handling ◽  
Motion Data ◽  
Trunk Movements ◽  
Flexion And Extension

Pushing and pulling tasks account for 20% of low-back injury claims. Torso flexion necessary for pushing exertions requires different muscle recruitment than for extension exertions typical of lifting tasks. These differences in recruitment and control may influence spinal stability and associated risk of injury. Active muscle stiffness is considered the primary stabilizing mechanism for spinal stability. Therefore, active trunk stiffness was recorded while subjects generated upright isometric trunk flexion and extension exertions against an isotonic preload. Small pseudo-random force disturbances were superimposed on the preloads causing small amplitude trunk movements. Trunk stiffness was computed from systems identification of the measured force and trunk motion data. Results demonstrated significantly greater stiffness during flexion exertions as compared to extension exertions. EMG data suggest this difference was due to increased co-contraction during the flexion exertions. These behaviours were attributed to the need to augment neuromuscular control of spinal stability during pushing tasks. Keywords: Spine; Co-contraction; Push; Manual Materials Handling; Biomechanics

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